How To Lower Idle On 1993 Mercury Cougar

you cant change the idle on ecu controled cars/trucks 0f the 90s idle air controll takes care of the idle. you could try to put a chip in . but all thats going to do is give you a constant MIL light (check engine)or (check gauges) light. starting in the 90s they are built to put out the power that they put out and thats IT. any thing you do to MOD it  ( including  K AND N AIR FILTERS is going to make warning lights be on stall not run right ect . the 70s are over. starting in the 2000s you can flash them a new program but thats more of a GM thing . i think just the GEM and PCM are flashable for ford starting in the 2000s. so long story short if you dont like the cougar that you are thinking of buying get one that has the power you want MODS will just wreck you car. run to rich or lean both are bad for your cars egine. but they are very good cars i have a 93 with 300200 on it and its still just as good as the day i got (1994) never seen a winter no rust on it